Flat screen frame



FIG. 1 is a front perspective view of a flat screen frame, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a lateral view (left side) thereof;

FIG. 5 is a back perspective view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a lateral view (right side) thereof; and,

FIG. 8 is a top view thereof.

The broken lines shown in the drawings are directed to environment, are for informational purposes only and form no part of the claimed design. 

The ornamental design for a flat screen frame, as shown and described. 